Sample: 10KCNYE002


Sample ID: 10KCNYE002 [1]
Station ID: 10KCNYE002
AT Num:
Volcano: Kasatochi
Possible source:
Eruption:
Collector: Nye, C. J.
Date sampled: 2010-01-01
Sample type 1:
Color:
Final unit:
Text Description: Hand sample; >20g. Reddish-gms dark grey lava from talus derived from cliff to SW and sitting on top of 2008 deposits. Lava forms cliff easily 40 m tall, mostly massive 3-4m wide columns, mostly vertical w/ poorly-developed sub-horizontal parting at ~1 meter intervals. There is one noticeable diagonal parting zone. Was here in mid-late morning as thousands of auklets came on shore. Points of activity are this talus and another large talus, apparently on top of 2008 deposits to southeast - up towards crater rim. Basalt, medium gray with purple cast; obvious phenocrysts rare. Rock largely crystalline w/ microphenocrysts down to 0.25 mm. Overall plag>>cpx.
Sample Location:

References Cited

[1] Geology of Kasatochi volcano, Aleutian Islands, Alaska, 2017

Nye, C.J., Scott, W.E., Neill, O.K., Waythomas, C.F., Cameron, C.E., and Calvert, A.T., 2017, Geology of Kasatochi volcano, Aleutian Islands, Alaska: Alaska Division of Geological & Geophysical Surveys Professional Report 123, 127 p., 1 sheet, scale 1:5000. http://doi.org/10.14509/29718